(Statements
{+(Assignment
  {+(MemberAccess
    {+(Identifier)+})+}
  {+(If
    {+(MemberAccess
      {+(Identifier)+})+}
    {+(MemberAccess
      {+(Identifier)+})+}
    {+(MemberAccess
      {+(MemberAccess
        {+(Identifier)+})+})+})+})+}
{-(If
  {-(Identifier)-}
  {-(Identifier)-}
  {-(Identifier)-})-})